6 Dasher with 109gr Berger Hybrids

SD3Gunner

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Minuteman
Aug 23, 2024
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Mission SD
I am currently about to start load data for my Dasher and am looking at what works for you guys out there (powder, charge wt, bullet jump, ect). I want to keep this thread strictly about data regarding the Berger 109gr Hybrid in the 6 Dasher, so please leave out your favorite 105gr VLD/Hybrid comments. I am using Alpha Brass and rem bench rest 7.5 sr primers. Thanks
 
I'm in the same boat except with 450 primers. Just waiting for my Dasher barrel. I got 2500 109 Hybrids so this shit better work lol. The plan is to start at 30.5gr Varget and go from there. A nice load in the 2820-2850 range and I'll be happy.
 
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29.7gr N150
Alpha brass
CCI 450
30 thou off
.154 freebore (alpha reamer)

This is my prs load that runs at 2790 fps, with an sd of 8 fps and an es of 32 fps. I've heard that N140, N150, and varget will be similar so like others have said, that 30gr range will be a good start.

I had similar results with 30.3gr of N150 that ran around 2825 but did have slight ejector marks. It was about 100 degrees out so I went with the lower load for safety during the summer months.

I tested from 10 thou off to 70 thou off in 3 thou increments. I couldn't shoot the difference between 30 to 60 thou so I set it at 30 off and will let it roll for the life of the barrel.

Hope this helps with your builds.